引用本文:梁健,岳文,孙建华,侯斌斌,尹浩,刘俊秀.超声表面滚压处理铝合金钻杆的高温摩擦学性能[J].中国表面工程,2016,29(5):129~137
LIANG Jian,YUE Wen,SUN Jian-hua,HOU Bin-bin,YIN Hao,LIU Jun-xiu.High Temperature Tribological Properties of Aluminum Alloy Drill Pipe Processed by Ultrasonic Surface Rolling[J].China Surface Engineering,2016,29(5):129~137
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超声表面滚压处理铝合金钻杆的高温摩擦学性能
梁健1, 岳文2, 孙建华1, 侯斌斌2, 尹浩1, 刘俊秀2
1.中国地质科学院 勘探技术研究所, 河北 廊坊 065000;2.中国地质大学(北京) 工程技术学院, 北京 100083
摘要:
为了提高铝合金钻杆的耐磨性，利用超声表面滚压技术（USRP）对2219铝合金钻杆材料进行表面强化处理。采用透射电子显微镜（TEM）表征了USRP处理后铝合金的晶粒大小，采用扫描电子显微镜（SEM）、X射线衍射仪（XRD）和显微硬度计测量了强化层的微观形貌、相组成和显微硬度，并利用高温摩擦磨损试验机评价了试样的摩擦学性能，对磨副为玛瑙球。结果表明，经USRP处理后2219铝合金表面形成了纳米晶和厚度约500 μm的塑性强化层，表面硬度由120 HV0.05提高至190 HV0.05。随着摩擦磨损试验温度的升高，未处理试样和USRP试样的平均摩擦因数和磨损率都逐渐增大。在相同试验温度下，USRP试样的平均摩擦因数和磨损率均小于未处理试样的。未处理试样和USRP试样的磨损机制主要是黏着磨损和磨粒磨损。
关键词:  铝合金  钻杆  超声表面滚压  表面纳米化  高温摩擦学性能
DOI：10.11933/j.issn.1007-9289.2016.05.017
分类号:
基金项目:国家自然科学基金（51404217，41572362）；中国地质调查局地质调查项目（12120113016800）
High Temperature Tribological Properties of Aluminum Alloy Drill Pipe Processed by Ultrasonic Surface Rolling
LIANG Jian1, YUE Wen2, SUN Jian-hua1, HOU Bin-bin2, YIN Hao1, LIU Jun-xiu2
1.Institute of Exploration Techniques, Chinese Academy of Geological Sciences, Langfang 065000, Hebei;2.School of Engineering and Technology, China University of Geosciences(Beijing), Beijing 100083
Abstract:
To improve the wear resistance of aluminum drill pipe, the ultrasonic surface rolling processing (USRP) was used to modify the surface strength of the 2219 aluminum alloy. The grain size of the sample treated by USRP was measured by TEM. Morphologies, phase compositions and microhardness were conducted by SEM, XRD and micro-hardness tester, respectively. The tribological properties of untreated and USRP samples were evaluated by a high temperature tribometer. The counter tribopair was an agate ball. The results showed that the nano-sized grain and a plastic reinforcement layer with a thickness of 500 μm are produced on the surface of aluminum alloy by USRP treatment. The surface hardness of the USRP sample is improved from 120 HV0.05 to 190 HV0.05. The average friction coefficient and wear rate of untreated and URSP samples rise with the increase of the temperature. The average friction coefficient and the wear rate of URSP samples are lower than those of the untreated samples at the same experimental temperature. The wear mechanisms of the untreated and USRP samples are adhesive wear and abrasive wear.
Key words:  aluminum alloy  drill pipe  ultrasonic surface rolling processing  surface nanocrystallization  high temperature tribological properties
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